Pipe joint assemblies and fittings for high - density polyethylene pressure pipes ; fittings for resistance welding ; dimensions 高密度聚乙烯压力管道用管道连接组件和管道配件.第7
Pipe joint assemblies and fittings for unplasticized polyvinyl chloride pressure pipes ; bushings , flanges , seals ; dimensions 未增塑聚氯乙烯压力管道用管连接组件和接头.内外螺母
Pipe joint assemblies and fittings of unplasticized polyvinyl chloride pressure pipelines ; dimensions of flanged and socket fittings 未增塑聚氯乙烯压力管道的管连接组件和接头.带法兰的
Tubing and fitting assemblies used in automotive air brake systems , performance requirements for sae j844d nonmetallic 汽车空气制动系统中使用的sae j844d非金属管件和连接组件的性能要求
Pipe joint assemblies and fittings for high - density polyethylene pressure pipes ; injection - moulded fittings for butt welding ; dimensions 高密度聚乙烯压力管用管道连接组件和管道配件.第6部